<!DOCTYPE html>
<!--在html中加入xml命名空间——th -->
<html lang="en" xmlns:th="http://www.thymeleaf.org">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>

    <form action="/account/login" method="post">
        用户名：<input type="text" name="username"><br>
        密码：<input type="password" name="password"><br>
        <!--输入错误提示，从Controller获得消息提示-->
        <p th:text="${msg}"></p>
        <input type="submit" value="登陆">
    </form>
</body>
</html>